11222887 has 4 divisors (see below), whose sum is σ = 12086200. Its totient is φ = 10359576.

The previous prime is 11222867. The next prime is 11222917. The reversal of 11222887 is 78822211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11222887 - 2⁷ = 11222759 is a prime.

It is a super-2 number, since 2×11222887² = 251906385229538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431637 + ... + 431662.

It is an arithmetic number, because the mean of its divisors is an integer number (3021550).

Almost surely, 2^11222887 is an apocalyptic number.

11222887 is a deficient number, since it is larger than the sum of its proper divisors (863313).

11222887 is an equidigital number, since it uses as much as digits as its factorization.

11222887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863312.

The product of its digits is 3584, while the sum is 31.

The square root of 11222887 is about 3350.0577606961. The cubic root of 11222887 is about 223.8900861159.

The spelling of 11222887 in words is "eleven million, two hundred twenty-two thousand, eight hundred eighty-seven".